Can someone please help me ASAP

How are elements arranged in a periodic table

Which of the following statements is false regarding aromaticity? a. the compound must be cyclic b. the compound must be fully conjugated c. the compound must be planar d.the number of electrons in the pi system must satisfy the hückel 4n+2 rule e. the compound must have a neutral charge

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?